Yes — the impregnated wood body is floatable, so the grader works in the water rather than lifting fish out.

Box Grader

Two models are stocked — one adjustable from 4 to 17 mm and one from 18 to 30 mm.

A lever mounted to the handle is thumb tripped; pressing it up or down at the respective notches adjusts the grid diagonally to set the gap.

Choose on the gap range you need — 4 to 17 mm for fry and fingerling grading, 18 to 30 mm for grow-out and market-size fish.

No — the two ranges do not overlap, so if you grade across both windows you need both graders.

Impregnated wood with all metal parts in corrosion-resistant aluminium and brass.

No — it is a manual grader with nothing to power, plumb or service.

A floating box grader for sorting fish by size in tanks and ponds, with an adjustable grid.

Price range: $700.00 through $800.00 ex GST

Option

Clear

Categories: Fish Graders

Applications: Aquaponics, Hatchery, Pond, RAS

Brand: FIAP

Product Information

Two models covering an adjustable gap range of 4 to 17 mm and 18 to 30 mm — between them, fingerlings through to grow-out fish
Gap width adjusts on the spot with a thumb-tripped lever mounted on the handle — no tools, no loose parts
Notches along the handle set the grid diagonally, so accurate gap widths are held between the grading slats through the whole range
Floatable body made from impregnated wood, so the grader sits in the water and works with the fish rather than lifting them out
All metal parts are corrosion-resistant aluminium and brass
Made by FIAP — a simple, manual grader with nothing to power, plumb or service
To choose your model: pick from the gap range you need, not the fish weight — the 4 to 17 mm grader covers fry and fingerling work, and the 18 to 30 mm grader covers grow-out and market-size fish. If your grading window spans both, you need both graders; the ranges do not overlap.

Model	Adjustable gap range	Typical use	Body	Metal parts
1450	4 – 17 mm	Fry and fingerling grading	Impregnated wood, floatable	Corrosion-resistant aluminium and brass
1451	18 – 30 mm	Grow-out and market-size fish	Impregnated wood, floatable	Corrosion-resistant aluminium and brass
Both models	Thumb-tripped lever on the handle, set at notches to adjust the grid diagonally	Manual — no power or plumbing required	Box dimensions not published by supplier	Throughput not published by supplier

What gap widths can I grade at?

How is the gap width adjusted?

Which model should I buy?

Can one grader cover the whole range?

Does it float?

What is it made from?

Does it need power or plumbing?

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